package com.njg.juc.base;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * @author njg
 * @version 1.0
 * @date 2025/4/22 20:15
 */
public class SyncVSLockDemo {

    public synchronized void m1(){
        System.out.println(Thread.currentThread().getName() + "\t" + "----come in");
        //睡眠几秒
        try {
            TimeUnit.SECONDS.sleep(4);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    private final Lock lock = new ReentrantLock();

    public void m2(){
        if (lock.tryLock()) {
            try {
                System.out.println(Thread.currentThread().getName() + "\t" + "----come in");
                TimeUnit.SECONDS.sleep(4);
            } catch (InterruptedException e) {
                e.printStackTrace();
            } finally {
                lock.unlock();
            }
        }else {
            System.out.println(Thread.currentThread().getName() + "\t" + "强锁失败，请重试");
        }
    }

    public void m3(){
        try {
            if (lock.tryLock(2L, TimeUnit.SECONDS)) {
                try {
                    System.out.println(Thread.currentThread().getName() + "\t" + "----come in");
                    try { TimeUnit.SECONDS.sleep(1); } catch (InterruptedException e) { e.printStackTrace(); }
                } finally {
                    lock.unlock();
                }
            }else {
                System.out.println(Thread.currentThread().getName() + "\t" + "----超过2秒抢锁失败，请重试");
            }
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
    }

    public static void main(String[] args) {
        SyncVSLockDemo syncVSLockDemo = new SyncVSLockDemo();
        new Thread(()-> syncVSLockDemo.m3(), "t1").start();
        new Thread(()-> syncVSLockDemo.m3(), "t2").start();
    }
}
